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2 янв 1940 г. - English physicists John Randall and Harry Boot develop a compact magnetron for use in aeroplane radar navigation systems

Добавлено на ленту времени:

20th Century

ByRafelle Marie Timog Allego
10 фев 2018

Дата:

2 янв 1940 г.
Сейчас
~ 84 г назад
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